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IsCharAlpha

The IsCharAlpha function determines whether a character is an alphabetic character. This determination is based on the semantics of the language selected by the user during setup or by using Control Panel.

VB4-32,5,6
Declare Function IsCharAlpha Lib "user32" Alias "IsCharAlphaA" (ByVal cChar As Byte) As Long

VB.NET
System.Char.IsLetter

Operating Systems Supported
Requires Windows NT 3.1 or later; Requires Windows 95 or later

Library
User32

Parameter Information
- ch
Specifies the character to be tested.

Return Values
If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Last update: 07 April 2006